v1-2-8: fix nft trades and events tx_hash

What's Changed

• added opensea-polygon trades by @sohwak in #1361
• OP2 update contract creator list by @MSilb7 in #1359
• Update tokens.sql by @0xroll in #1365
• nft trades seaport contract -- switch tx_hash and block_number to load columns correctly by @jeff-dude in #1363
• fix tx_hash / block_number column switch on nft events by @jeff-dude in #1370

Full Changelog: v1-2-7...v1-2-8